日粮uNDF对反刍动物生长和代谢的作用

Nutritional function of undigested neutral detergent fiber in ruminant

未消化中性洗涤纤维(undigested neutral detergent fiber,uNDF)是指不能被瘤胃微生物发酵的中性洗涤纤维(neutral detergent fiber,NDF),对反刍动物生长和代谢具有重要作用。日粮中适宜的uNDF对反刍动物营养和健康至关重要。本文分别从uNDF对反刍动物的采食行为、瘤胃功能、NDF消化率、动物生产性能的营养调控作用和uNDF测定方法以及如何指导日粮配制进行综述,以期为反刍动物的健康和高效生产提供参考和理论依据。

The undigested neutral detergent fiber（uNDF）is a portion of neutral detergent fiber that cannot be fermented and utilized by the microorganisms in the rumen.However,it plays an important role in the growth and metabolism of ruminants.Therefore,optimal level of uNDF in the diet is crucial for the nutrition and health of ruminants.In this paper,we reviewed 1）the nutritional functions of uNDF,including feeding behavior,rumen function,NDF digestibility,and diet formulation;2）uNDF determination method;3）application of uNDF in diet formulation in order to provide reference and theoretical basis for the health and efficient production of ruminants.